import React, { Component } from 'react';
import { Chart, Tooltip, Geom, Coord } from 'bizcharts';
import { DataView } from '@antv/data-set';
import { Divider } from 'antd';
import classNames from 'classnames';
import ReactFitText from 'react-fittext';
import Debounce from 'lodash-decorators/debounce';
import Bind from 'lodash-decorators/bind';
import autoHeight from '../autoHeight';

import styles from './index.less';

/* eslint react/no-danger:0 */
@autoHeight()
export default class Pie extends Component {
    state = {
        legendData: [],
        legendBlock: false,
    };

    componentDidMount() {
        this.getLegendData();
        this.resize();
        window.addEventListener('resize', this.resize);
    }

    componentWillReceiveProps(nextProps) {
        const { data } = this.props;
        if (data !== nextProps.data) {
            // because of charts data create when rendered
            // so there is a trick for get rendered time
            const { legendData } = this.state;
            this.setState(
                {
                    legendData: [...legendData],
                },
                () => {
                    this.getLegendData();
                }
            );
        }
    }

    componentWillUnmount() {
        window.removeEventListener('resize', this.resize);
        this.resize.cancel();
    }

    getG2Instance = chart => {
        this.chart = chart;
    };

    // for custom lengend view
    getLegendData = () => {
        if (!this.chart) return;
        const geom = this.chart.getAllGeoms()[0]; // 获取所有的图形
        const items = geom.get('dataArray') || []; // 获取图形对应的

        const legendData = items.map(item => {
            /* eslint no-underscore-dangle:0 */
            const origin = item[0]._origin;
            origin.color = item[0].color;
            origin.checked = true;
            return origin;
        });

        this.setState({
            legendData,
        });
    };

    handleRoot = n => {
        this.root = n;
    };

    handleLegendClick = (item, i) => {
        const newItem = item;
        newItem.checked = !newItem.checked;

        const { legendData } = this.state;
        legendData[i] = newItem;

        const filteredLegendData = legendData.filter(l => l.checked).map(l => l.x);

        if (this.chart) {
            this.chart.filter('x', val => filteredLegendData.indexOf(val) > -1);
        }

        this.setState({
            legendData,
        });
    };

    // for window resize auto responsive legend
    @Bind()
    @Debounce(300)
    resize() {
        const { hasLegend } = this.props;
        if (!hasLegend || !this.root) {
            window.removeEventListener('resize', this.resize);
            return;
        }
        const { legendBlock } = this.state;
        if (this.root.parentNode.clientWidth <= 380) {
            if (!legendBlock) {
                this.setState({
                    legendBlock: true,
                });
            }
        } else if (legendBlock) {
            this.setState({
                legendBlock: false,
            });
        }
    }

    render() {
        const {
            valueFormat,
            subTitle,
            total,
            hasLegend = false,
            className,
            style,
            height,
            forceFit = true,
            percent = 0,
            color,
            inner = 0.75,
            animate = true,
            colors,
            lineWidth = 1,
        } = this.props;

        const { legendData, legendBlock } = this.state;
        const pieClassName = classNames(styles.pie, className, {
            [styles.hasLegend]: !!hasLegend,
            [styles.legendBlock]: legendBlock,
        });

        const {
            data: propsData,
            selected: propsSelected = true,
            tooltip: propsTooltip = true,
        } = this.props;

        let data = propsData || [];
        let selected = propsSelected;
        let tooltip = propsTooltip;

        const defaultColors = colors;
        // let data = this.props.data || [];
        // let selected = this.props.selected || true;
        // let tooltip = this.props.tooltip || true;
        let formatColor;

        const scale = {
            x: {
                type: 'cat',
                range: [0, 1],
            },
            y: {
                min: 0,
            },
        };

        if (percent) {
            selected = false;
            tooltip = false;
            formatColor = value => {
                if (value === '占比') {
                    return color || 'rgba(24, 144, 255, 0.85)';
                } else {
                    return '#F0F2F5';
                }
            };

            data = [
                {
                    x: '占比',
                    y: parseFloat(percent),
                },
                {
                    x: '反比',
                    y: 100 - parseFloat(percent),
                },
            ];
        }

        const tooltipFormat = [
            'x*percent',
            (x, p) => ({
                name: x,
                value: `${(p * 100).toFixed(2)}%`,
            }),
        ];

        const padding = [12, 0, 12, 0];

        const dv = new DataView();
        dv.source(data).transform({
            type: 'percent',
            field: 'y',
            dimension: 'x',
            as: 'percent',
        });

        return (
            <div ref={this.handleRoot} className={pieClassName} style={style}>
                <ReactFitText maxFontSize={25}>
                    <div className={styles.chart}>
                        <Chart
                            scale={scale}
                            height={height}
                            forceFit={forceFit}
                            data={dv}
                            padding={padding}
                            animate={animate}
                            onGetG2Instance={this.getG2Instance}
                        >
                            {!!tooltip && <Tooltip showTitle={false} />}
                            <Coord type="theta" innerRadius={inner} />
                            <Geom
                                style={{ lineWidth, stroke: '#fff' }}
                                tooltip={tooltip && tooltipFormat}
                                type="intervalStack"
                                position="percent"
                                color={['x', percent ? formatColor : defaultColors]}
                                selected={selected}
                            />
                        </Chart>

                        {(subTitle || total) && (
                            <div className={styles.total}>
                                {subTitle && <h4 className="pie-sub-title">{subTitle}</h4>}
                                {/* eslint-disable-next-line */}
                                {total && (
                                    <div className="pie-stat">
                                        {typeof total === 'function' ? total() : total}
                                    </div>
                                )}
                            </div>
                        )}
                    </div>
                </ReactFitText>

                {hasLegend && (
                    <ul className={styles.legend}>
                        {legendData.map((item, i) => (
                            <li key={item.x} onClick={() => this.handleLegendClick(item, i)}>
                                <span
                                    className={styles.dot}
                                    style={{
                                        backgroundColor: !item.checked ? '#aaa' : item.color,
                                    }}
                                />
                                <span className={styles.legendTitle}>{item.x}</span>
                                <Divider type="vertical" />
                                <span className={styles.percent}>
                                    {`${(isNaN(item.percent) ? 0 : item.percent * 100).toFixed(
                                        2
                                    )}%`}
                                </span>
                                <span className={styles.value}>
                                    {valueFormat ? valueFormat(item.y) : item.y}
                                </span>
                            </li>
                        ))}
                    </ul>
                )}
            </div>
        );
    }
}
